<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>before adter 应用</title>
    <style>
        header{
            height:100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content:center;
            position: relative;
        }
        header:after {
            content:"";
            background:url(/img/jhs_1.jpg) no-repeat center center/cover;
            height:100%;
            width: 100%;
            position: absolute;
            z-index: -1;
            opacity: .6;
        }
        .isrequired:after {
            content: "*";
            color: #f00;
            margin-left: 5px;
        }
    </style>
</head>

<body>
    <!-- <form>
        <label class="isrequired" for="name">姓名</label>
        <input type="text" id="name" name="name" placeholder="请输入姓名">
    </form> -->
    <header>
        <h1>
            欢迎来到北京西城广安门内街道
        </h1>
        <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Sequi, culpa.
        </p>
    </header>
    <section>
        <h2>
            欢迎陌生的你来这里
        </h2>
        <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Voluptatibus, vero voluptates! Iste sint est enim,
            explicabo aliquam at ducimus nobis.
        </p>
    </section>

</body>

</html>